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Diffstat (limited to 'UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForBfvBase.asm')
-rw-r--r--UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForBfvBase.asm86
1 files changed, 0 insertions, 86 deletions
diff --git a/UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForBfvBase.asm b/UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForBfvBase.asm
deleted file mode 100644
index d0c2d8c39c..0000000000
--- a/UefiCpuPkg/ResetVector/Vtf0/Ia32/SearchForBfvBase.asm
+++ /dev/null
@@ -1,86 +0,0 @@
-;------------------------------------------------------------------------------
-; @file
-; Search for the Boot Firmware Volume (BFV) base address
-;
-; Copyright (c) 2008 - 2009, Intel Corporation. All rights reserved.<BR>
-; This program and the accompanying materials
-; are licensed and made available under the terms and conditions of the BSD License
-; which accompanies this distribution. The full text of the license may be found at
-; http://opensource.org/licenses/bsd-license.php
-;
-; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-;
-;------------------------------------------------------------------------------
-
-;#define EFI_FIRMWARE_FILE_SYSTEM2_GUID \
-; { 0x8c8ce578, 0x8a3d, 0x4f1c, { 0x99, 0x35, 0x89, 0x61, 0x85, 0xc3, 0x2d, 0xd3 } }
-%define FFS_GUID_DWORD0 0x8c8ce578
-%define FFS_GUID_DWORD1 0x4f1c8a3d
-%define FFS_GUID_DWORD2 0x61893599
-%define FFS_GUID_DWORD3 0xd32dc385
-
-BITS 32
-
-;
-; Modified: EAX, EBX
-; Preserved: EDI, ESP
-;
-; @param[out] EBP Address of Boot Firmware Volume (BFV)
-;
-Flat32SearchForBfvBase:
-
- xor eax, eax
-searchingForBfvHeaderLoop:
- ;
- ; We check for a firmware volume at every 4KB address in the top 16MB
- ; just below 4GB. (Addresses at 0xffHHH000 where H is any hex digit.)
- ;
- sub eax, 0x1000
- cmp eax, 0xff000000
- jb searchedForBfvHeaderButNotFound
-
- ;
- ; Check FFS GUID
- ;
- cmp dword [eax + 0x10], FFS_GUID_DWORD0
- jne searchingForBfvHeaderLoop
- cmp dword [eax + 0x14], FFS_GUID_DWORD1
- jne searchingForBfvHeaderLoop
- cmp dword [eax + 0x18], FFS_GUID_DWORD2
- jne searchingForBfvHeaderLoop
- cmp dword [eax + 0x1c], FFS_GUID_DWORD3
- jne searchingForBfvHeaderLoop
-
- ;
- ; Check FV Length
- ;
- cmp dword [eax + 0x24], 0
- jne searchingForBfvHeaderLoop
- mov ebx, eax
- add ebx, dword [eax + 0x20]
- jnz searchingForBfvHeaderLoop
-
- jmp searchedForBfvHeaderAndItWasFound
-
-searchedForBfvHeaderButNotFound:
- ;
- ; Hang if the SEC entry point was not found
- ;
- debugShowPostCode POSTCODE_BFV_NOT_FOUND
-
- ;
- ; 0xbfbfbfbf in the EAX & EBP registers helps signal what failed
- ; for debugging purposes.
- ;
- mov eax, 0xBFBFBFBF
- mov ebp, eax
- jmp $
-
-searchedForBfvHeaderAndItWasFound:
- mov ebp, eax
-
- debugShowPostCode POSTCODE_BFV_FOUND
-
- OneTimeCallRet Flat32SearchForBfvBase
-